Suppression of superfluidity of exciton-polaritons by magnetic field

Yuri G. Rubo*, A. V. Kavokin, I. A. Shelykh

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

93 Citations (Scopus)

Abstract

We show that the properties of exciton-polariton condensate in a semiconductor microcavity are strongly sensitive to the external magnetic field normal to the cavity plane. In particular, the superfluidity is suppressed at a critical magnetic field Bc proportional to the polariton concentration. For B < Bc the Zeeman splitting of polaritons is exactly compensated by polariton-polariton interactions in the elliptically polarized condensate. Above the critical point, the spin degeneracy is lifted and the superfluidity reappears again on the circularly polarized lower polariton branch.

Original languageEnglish
Pages (from-to)227-230
Number of pages4
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume358
Issue number3
DOIs
Publication statusPublished - 16 Oct 2006

Bibliographical note

Funding Information:
We are grateful to Guillaume Malpuech for valuable discussions. This work was supported in part by DGAPA-UNAM (under the project IN116402) and EPSRC.

Other keywords

  • Exciton-polaritons
  • Polarization
  • Superfluidity
  • Zeeman splitting

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